Definition of nucleus

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Nucleus (n.) A kernel; hence, a central mass or point about which matter is gathered, or to which accretion is made; the central or material portion; -- used both literally and figuratively..

Lern More About Nucleus

Endoblast :: Endoblast (n.) Entoblast; endoplast. See Nucleus,.
Nucleolated :: Nucleolated (a.) Having a nucleole, or second inner nucleus..
Nucellus :: Nucellus (n.) See Nucleus, 3 (a)..
Janizary :: "Janizary (n.) A soldier of a privileged military class, which formed the nucleus of the Turkish infantry, but was suppressed in 1826..
Periblast :: Periblast (a.) The protoplasmic matter which surrounds the entoblast, or cell nucleus, and undergoes segmentation..
Umbra :: Umbra (n.) The central dark portion, or nucleus, of a sun spot..
Tercine :: Tercine (n.) A cellular layer derived from the nucleus of an ovule and surrounding the embryo sac. Cf. Quintine.
Nucleus :: Nucleus (n.) A kernel; hence, a central mass or point about which matter is gathered, or to which accretion is made; the central or material portion; -- used both literally and figuratively..
Mesoplast :: Mesoplast (n.) The nucleus of a cell; mesoblast.
Pyrrol :: Pyrrol (n.) A nitrogenous base found in coal tar, bone oil, and other distillates of organic substances, and also produced synthetically as a colorless liquid, C4H5N, having on odor like that of chloroform. It is the nucleus and origin of a large number of derivatives. So called because it colors a splinter of wood moistened with hydrochloric acid a deep red..
Enchylemma :: Enchylemma (n.) The basal substance of the cell nucleus; a hyaline or granular substance, more or less fluid during life, in which the other parts of the nucleus are imbedded..
Nucleus :: Nucleus (n.) The tip, or earliest part, of a univalve or bivalve shell..
Nucleolus :: Nucleolus (n.) A small rounded body contained in the nucleus of a cell or a protozoan.
Cytoblast :: Cytoblast (n.) The nucleus of a cell; the germinal or active spot of a cellule, through or in which cell development takes place..
Intranuclear :: Intranuclear (a.) Within the nucleus of a cell; as. the intranuclear network of fibrils, seen in the first stages of karyokinesis..
Nucleiform :: Nucleiform (a.) Formed like a nucleus or kernel.
Phosphonium :: Phosphonium (n.) The hypothetical radical PH4, analogous to ammonium, and regarded as the nucleus of certain derivatives of phosphine..
Phosphoryl :: Phosphoryl (n.) The radical PO, regarded as the typical nucleus of certain compounds..
Cytococcus :: Cytococcus (n.) The nucleus of the cytula or parent cell.
Chromosome :: Chromosome (n.) One of the minute bodies into which the chromatin of the nucleus is resolved during mitotic cell division; the idant of Weismann.
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